Head holder



FIG. 1 is a front-right perspective view of a head holder according to the claimed design.

FIG. 2 is a rear-left perspective view of the head holder.

FIG. 3 is a front view of the head holder.

FIG. 4 is a rear view of the head holder.

FIG. 5 is a left side view of the head holder.

FIG. 6 is a right side view of the head holder.

FIG. 7 is a top view of the head holder.

FIG. 8 is a bottom view of the head holder.

FIG. 9 is a left side view of the head holder in a first pivoted position for illustration purposes.

FIG. 10 is a left side view of the head holder in a second pivoted position for illustration purposes; and,

FIG. 11 is a left side view of the head holder in a third pivoted position for illustration purposes.

The broken lines in the drawings illustrate portions of the head holder that form no part of the claimed design. 

CLAIM The ornamental design for a head holder, as shown and described. 